20020012003 has 4 divisors (see below), whose sum is σ = 20023567920. Its totient is φ = 20016456088.

The previous prime is 20020011997. The next prime is 20020012013. The reversal of 20020012003 is 30021002002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020012003 - 2³³ = 11430077411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020012013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769500 + ... + 1780777.

It is an arithmetic number, because the mean of its divisors is an integer number (5005891980).

Almost surely, 2^20020012003 is an apocalyptic number.

20020012003 is a deficient number, since it is larger than the sum of its proper divisors (3555917).

20020012003 is an equidigital number, since it uses as much as digits as its factorization.

20020012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555916.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20020012003 its reverse (30021002002), we get a palindrome (50041014005).

The spelling of 20020012003 in words is "twenty billion, twenty million, twelve thousand, three".